Public bug reported:
systemd-resolved returns a malformed packet when looking up an openpgp
key (via a cert record rfc4398) from my internal authoritative dns
server.
The command I used was gpg2 -v --auto-key-locate=clear,cert,local
--locate-keys [Email Address]
This works correctly if I change /etc/resolv.conf symlink to point at
/run/systemd/resolve/resolv.conf so that it doesn't use the local
systemd-resolved resolver/cache instead of /run/resolvconf/resolv.conf
I'm including a wireshark capture of the malformed packet (filtered for
127.0.0.53).
I noticed that this was over udp. If I recall correctly, cert records
are usually big enough that they require using tcp.
Description: Ubuntu Artful Aardvark (development branch)
Release: 17.10
systemd:
Installed: 233-8ubuntu3
Candidate: 233-8ubuntu3
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "bug.pcapng"
https://bugs.launchpad.net/bugs/1719062/+attachment/4955485/+files/bug.pcapng
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https://bugs.launchpad.net/bugs/1719062
Title:
systemd-resolved malformed packet on cert dns lookup
Status in systemd package in Ubuntu:
New
Bug description:
systemd-resolved returns a malformed packet when looking up an openpgp
key (via a cert record rfc4398) from my internal authoritative dns
server.
The command I used was gpg2 -v --auto-key-locate=clear,cert,local
--locate-keys [Email Address]
This works correctly if I change /etc/resolv.conf symlink to point at
/run/systemd/resolve/resolv.conf so that it doesn't use the local
systemd-resolved resolver/cache instead of /run/resolvconf/resolv.conf
I'm including a wireshark capture of the malformed packet (filtered
for 127.0.0.53).
I noticed that this was over udp. If I recall correctly, cert records
are usually big enough that they require using tcp.
Description: Ubuntu Artful Aardvark (development branch)
Release: 17.10
systemd:
Installed: 233-8ubuntu3
Candidate: 233-8ubuntu3
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https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1719062/+subscriptions
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